BUG: using __this_cpu_add() in preemptible [00000000] code: syzkaller716561/4145
caller is __this_cpu_preempt_check+0x1c/0x20 lib/smp_processor_id.c:62
CPU: 0 PID: 4145 Comm: syzkaller716561 Not tainted 4.4.114-ga81d322 #4
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 0000000000000000 b693122e3c7c4733 ffff8801d7bef648 ffffffff81d0394d
 0000000000000000 ffffffff839fe3a0 ffffffff83cef720 ffff8801d75cb000
 0000000000000003 ffff8801d7bef688 ffffffff81d63894 ffffffff810002b8
Call Trace:
 [<ffffffff81d0394d>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81d0394d>] dump_stack+0xc1/0x124 lib/dump_stack.c:51
 [<ffffffff81d63894>] check_preemption_disabled+0x1d4/0x200 lib/smp_processor_id.c:46
 [<ffffffff810002b8>] ? 0xffffffff810002b8
 [<ffffffff81d638fc>] __this_cpu_preempt_check+0x1c/0x20 lib/smp_processor_id.c:62
 [<ffffffff8312a229>] tcp_try_coalesce+0x249/0x4d0 net/ipv4/tcp_input.c:4278
 [<ffffffff831323a7>] tcp_queue_rcv+0x127/0x720 net/ipv4/tcp_input.c:4485
 [<ffffffff83149c7b>] tcp_send_rcvq+0x39b/0x450 net/ipv4/tcp_input.c:4531
 [<ffffffff83120edf>] tcp_sendmsg+0x1e8f/0x2b10 net/ipv4/tcp.c:1134
 [<ffffffff831d6c0c>] inet_sendmsg+0x2bc/0x4c0 net/ipv4/af_inet.c:755
 [<ffffffff82deb3ba>] sock_sendmsg_nosec net/socket.c:625 [inline]
 [<ffffffff82deb3ba>] sock_sendmsg+0xca/0x110 net/socket.c:635
 [<ffffffff82decf91>] ___sys_sendmsg+0x6c1/0x7c0 net/socket.c:1962
 [<ffffffff82deefe3>] __sys_sendmsg+0xd3/0x190 net/socket.c:1996
 [<ffffffff82ed901a>] C_SYSC_sendmsg net/compat.c:720 [inline]
 [<ffffffff82ed901a>] compat_SyS_sendmsg+0x2a/0x40 net/compat.c:718
 [<ffffffff81006d74>] do_syscall_32_irqs_on arch/x86/entry/common.c:390 [inline]
 [<ffffffff81006d74>] do_fast_syscall_32+0x314/0x890 arch/x86/entry/common.c:457
 [<ffffffff8377586a>] sysenter_flags_fixed+0xd/0x17
random: nonblocking pool is initialized
BUG: using __this_cpu_add() in preemptible [00000000] code: syzkaller716561/4871
caller is __this_cpu_preempt_check+0x1c/0x20 lib/smp_processor_id.c:62
CPU: 0 PID: 4871 Comm: syzkaller716561 Not tainted 4.4.114-ga81d322 #4
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 0000000000000000 51edef661fc0d8cb ffff8800b9057648 ffffffff81d0394d
 0000000000000000 ffffffff839fe3a0 ffffffff83cef720 ffff8800ac330000
 0000000000000003 ffff8800b9057688 ffffffff81d63894 ffffffff810002b8
Call Trace:
 [<ffffffff81d0394d>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81d0394d>] dump_stack+0xc1/0x124 lib/dump_stack.c:51
 [<ffffffff81d63894>] check_preemption_disabled+0x1d4/0x200 lib/smp_processor_id.c:46
 [<ffffffff810002b8>] ? 0xffffffff810002b8
 [<ffffffff81d638fc>] __this_cpu_preempt_check+0x1c/0x20 lib/smp_processor_id.c:62
 [<ffffffff8312a229>] tcp_try_coalesce+0x249/0x4d0 net/ipv4/tcp_input.c:4278
 [<ffffffff831323a7>] tcp_queue_rcv+0x127/0x720 net/ipv4/tcp_input.c:4485
 [<ffffffff83149c7b>] tcp_send_rcvq+0x39b/0x450 net/ipv4/tcp_input.c:4531
 [<ffffffff83120edf>] tcp_sendmsg+0x1e8f/0x2b10 net/ipv4/tcp.c:1134
 [<ffffffff831d6c0c>] inet_sendmsg+0x2bc/0x4c0 net/ipv4/af_inet.c:755
 [<ffffffff82deb3ba>] sock_sendmsg_nosec net/socket.c:625 [inline]
 [<ffffffff82deb3ba>] sock_sendmsg+0xca/0x110 net/socket.c:635
 [<ffffffff82decf91>] ___sys_sendmsg+0x6c1/0x7c0 net/socket.c:1962
 [<ffffffff82deefe3>] __sys_sendmsg+0xd3/0x190 net/socket.c:1996
 [<ffffffff82ed901a>] C_SYSC_sendmsg net/compat.c:720 [inline]
 [<ffffffff82ed901a>] compat_SyS_sendmsg+0x2a/0x40 net/compat.c:718
 [<ffffffff81006d74>] do_syscall_32_irqs_on arch/x86/entry/common.c:390 [inline]
 [<ffffffff81006d74>] do_fast_syscall_32+0x314/0x890 arch/x86/entry/common.c:457
 [<ffffffff8377586a>] sysenter_flags_fixed+0xd/0x17
BUG: using __this_cpu_add() in preemptible [00000000] code: syzkaller716561/5396
caller is __this_cpu_preempt_check+0x1c/0x20 lib/smp_processor_id.c:62
CPU: 1 PID: 5396 Comm: syzkaller716561 Not tainted 4.4.114-ga81d322 #4
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 0000000000000000 c4b9cbc66a1901d8 ffff8801d4897648 ffffffff81d0394d
 0000000000000001 ffffffff839fe3a0 ffffffff83cef720 ffff8801d8054800
 0000000000000003 ffff8801d4897688 ffffffff81d63894 ffffffff810002b8
Call Trace:
 [<ffffffff81d0394d>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81d0394d>] dump_stack+0xc1/0x124 lib/dump_stack.c:51
 [<ffffffff81d63894>] check_preemption_disabled+0x1d4/0x200 lib/smp_processor_id.c:46
 [<ffffffff810002b8>] ? 0xffffffff810002b8
 [<ffffffff81d638fc>] __this_cpu_preempt_check+0x1c/0x20 lib/smp_processor_id.c:62
 [<ffffffff8312a229>] tcp_try_coalesce+0x249/0x4d0 net/ipv4/tcp_input.c:4278
 [<ffffffff831323a7>] tcp_queue_rcv+0x127/0x720 net/ipv4/tcp_input.c:4485
 [<ffffffff83149c7b>] tcp_send_rcvq+0x39b/0x450 net/ipv4/tcp_input.c:4531
 [<ffffffff83120edf>] tcp_sendmsg+0x1e8f/0x2b10 net/ipv4/tcp.c:1134
 [<ffffffff831d6c0c>] inet_sendmsg+0x2bc/0x4c0 net/ipv4/af_inet.c:755
 [<ffffffff82deb3ba>] sock_sendmsg_nosec net/socket.c:625 [inline]
 [<ffffffff82deb3ba>] sock_sendmsg+0xca/0x110 net/socket.c:635
 [<ffffffff82decf91>] ___sys_sendmsg+0x6c1/0x7c0 net/socket.c:1962
 [<ffffffff82deefe3>] __sys_sendmsg+0xd3/0x190 net/socket.c:1996
 [<ffffffff82ed901a>] C_SYSC_sendmsg net/compat.c:720 [inline]
 [<ffffffff82ed901a>] compat_SyS_sendmsg+0x2a/0x40 net/compat.c:718
 [<ffffffff81006d74>] do_syscall_32_irqs_on arch/x86/entry/common.c:390 [inline]
 [<ffffffff81006d74>] do_fast_syscall_32+0x314/0x890 arch/x86/entry/common.c:457
 [<ffffffff8377586a>] sysenter_flags_fixed+0xd/0x17
BUG: using __this_cpu_add() in preemptible [00000000] code: syzkaller716561/6284
caller is __this_cpu_preempt_check+0x1c/0x20 lib/smp_processor_id.c:62
CPU: 0 PID: 6284 Comm: syzkaller716561 Not tainted 4.4.114-ga81d322 #4
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 0000000000000000 2a23a6e4749f1da4 ffff8800b6847648 ffffffff81d0394d
 0000000000000000 ffffffff839fe3a0 ffffffff83cef720 ffff8800b6bde000
 0000000000000003 ffff8800b6847688 ffffffff81d63894 ffffffff810002b8
Call Trace:
 [<ffffffff81d0394d>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81d0394d>] dump_stack+0xc1/0x124 lib/dump_stack.c:51
 [<ffffffff81d63894>] check_preemption_disabled+0x1d4/0x200 lib/smp_processor_id.c:46
 [<ffffffff810002b8>] ? 0xffffffff810002b8
 [<ffffffff81d638fc>] __this_cpu_preempt_check+0x1c/0x20 lib/smp_processor_id.c:62
 [<ffffffff8312a229>] tcp_try_coalesce+0x249/0x4d0 net/ipv4/tcp_input.c:4278
 [<ffffffff831323a7>] tcp_queue_rcv+0x127/0x720 net/ipv4/tcp_input.c:4485
 [<ffffffff83149c7b>] tcp_send_rcvq+0x39b/0x450 net/ipv4/tcp_input.c:4531
 [<ffffffff83120edf>] tcp_sendmsg+0x1e8f/0x2b10 net/ipv4/tcp.c:1134
 [<ffffffff831d6c0c>] inet_sendmsg+0x2bc/0x4c0 net/ipv4/af_inet.c:755
 [<ffffffff82deb3ba>] sock_sendmsg_nosec net/socket.c:625 [inline]
 [<ffffffff82deb3ba>] sock_sendmsg+0xca/0x110 net/socket.c:635
 [<ffffffff82decf91>] ___sys_sendmsg+0x6c1/0x7c0 net/socket.c:1962
 [<ffffffff82deefe3>] __sys_sendmsg+0xd3/0x190 net/socket.c:1996
 [<ffffffff82ed901a>] C_SYSC_sendmsg net/compat.c:720 [inline]
 [<ffffffff82ed901a>] compat_SyS_sendmsg+0x2a/0x40 net/compat.c:718
 [<ffffffff81006d74>] do_syscall_32_irqs_on arch/x86/entry/common.c:390 [inline]
 [<ffffffff81006d74>] do_fast_syscall_32+0x314/0x890 arch/x86/entry/common.c:457
 [<ffffffff8377586a>] sysenter_flags_fixed+0xd/0x17
BUG: using __this_cpu_add() in preemptible [00000000] code: syzkaller716561/6559
caller is __this_cpu_preempt_check+0x1c/0x20 lib/smp_processor_id.c:62
CPU: 0 PID: 6559 Comm: syzkaller716561 Not tainted 4.4.114-ga81d322 #4
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 0000000000000000 91e585fbb36a92a8 ffff8801d714f648 ffffffff81d0394d
 0000000000000000 ffffffff839fe3a0 ffffffff83cef720 ffff8801d36b6000
 0000000000000003 ffff8801d714f688 ffffffff81d63894 ffffffff810002b8
Call Trace:
 [<ffffffff81d0394d>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81d0394d>] dump_stack+0xc1/0x124 lib/dump_stack.c:51
 [<ffffffff81d63894>] check_preemption_disabled+0x1d4/0x200 lib/smp_processor_id.c:46
 [<ffffffff810002b8>] ? 0xffffffff810002b8
 [<ffffffff81d638fc>] __this_cpu_preempt_check+0x1c/0x20 lib/smp_processor_id.c:62
 [<ffffffff8312a229>] tcp_try_coalesce+0x249/0x4d0 net/ipv4/tcp_input.c:4278
 [<ffffffff831323a7>] tcp_queue_rcv+0x127/0x720 net/ipv4/tcp_input.c:4485
 [<ffffffff83149c7b>] tcp_send_rcvq+0x39b/0x450 net/ipv4/tcp_input.c:4531
 [<ffffffff83120edf>] tcp_sendmsg+0x1e8f/0x2b10 net/ipv4/tcp.c:1134